fda0b0b9094ec753b16373c64b71ccf5a16ea1f076779c9f74a7b6a192661aad

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12-03-2024 14:52

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General

Target

2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe
Size

34KB
MD5

ec280917e09b494eb6abbda0d729cd0d
SHA1

f7007675c1346bf95e8d5bf1ba8aed03442d0e62
SHA256

fda0b0b9094ec753b16373c64b71ccf5a16ea1f076779c9f74a7b6a192661aad
SHA512

5a7bb59061f97bcd9760a98a45d69807272386b96a791e6cd4143806aab544ed583ebb84df1e835ddeccdffc8f1a0b3ba575ab56420accb47fc5f80082e5b952
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFtzxt16g:b7o/2n1TCraU6GD1a4Xt9bRwrbF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1472	rewok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3684 wrote to memory of 1472	3684	2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe	87
PID 3684 wrote to memory of 1472	3684	2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe	87
PID 3684 wrote to memory of 1472	3684	2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_ec280917e09b494eb6abbda0d729cd0d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:1472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
34KB

MD5
8f68afc075e33bd5151c424ddc014ffb

SHA1
f0b4738c1cca167d475fc79922b9f334f17666ab

SHA256
958df3caffbed78410b8439475b30259ac14f7f7670d73105873c7238517caf0

SHA512
9c6b39ef68c77a60da61c9e49fb068f75ad42cb53c2f0dec3e880f4b96d0a4dfa18a450f24dda4a14a6ea4c089b4e9a2fd9e1e20ad2de44fe7626ffbec1ec144

Download Submit
memory/1472-22-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3684-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3684-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3684-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download